WO2018059060A1 - Panneau à commande tactile et dispositif d'affichage - Google Patents

Panneau à commande tactile et dispositif d'affichage Download PDF

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Publication number
WO2018059060A1
WO2018059060A1 PCT/CN2017/092212 CN2017092212W WO2018059060A1 WO 2018059060 A1 WO2018059060 A1 WO 2018059060A1 CN 2017092212 W CN2017092212 W CN 2017092212W WO 2018059060 A1 WO2018059060 A1 WO 2018059060A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
fingerprint recognition
touch panel
light
touch
Prior art date
Application number
PCT/CN2017/092212
Other languages
English (en)
Chinese (zh)
Inventor
刘英明
董学
吕敬
王海生
吴俊纬
丁小梁
许睿
赵利军
李昌峰
贾亚楠
郭玉珍
秦云科
顾品超
孟凡娜
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/743,583 priority Critical patent/US10503947B2/en
Publication of WO2018059060A1 publication Critical patent/WO2018059060A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1347—Preprocessing; Feature extraction
    • G06V40/1359—Extracting features related to ridge properties; Determining the fingerprint type, e.g. whorl or loop
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1341—Sensing with light passing through the finger
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a touch panel and a display device.
  • Fingerprints are inherently invariant features of the human body. They are unique to each person and can be distinguished from others. They are made up of a series of ridges and valleys on the surface of the finger skin. The details of the composition usually include the bifurcation of the ridges, the ends of the ridges, the arches (for example, tent-shaped arches), left-handedness, right-handedness, spirals or double-rotation, etc. These constituent details determine the uniqueness of the fingerprint pattern.
  • the fingerprint recognition technology developed due to the uniqueness of the fingerprint pattern is an early technology for personal identification. Optical imaging, thermal sensors, human infrared sensors and the like are currently widely used for fingerprint acquisition and input.
  • the present invention aims to at least solve one of the technical problems existing in the prior art, and provides a novel touch panel and a display device with a fingerprint recognition function, which can accurately detect a fingerprint.
  • a technical solution adopted by the present invention is a touch panel including an array substrate and a fingerprint identification substrate, the array substrate including a first substrate and a plurality of pixel units disposed on the first substrate, each The pixel unit includes a thin film transistor and a organic electroluminescent diode, the fingerprint recognition substrate includes a second substrate and a fingerprint recognition unit disposed on the second substrate, the fingerprint recognition substrate being located away from the first substrate a side of the pixel unit, the array substrate further includes a light shielding layer, and a via hole disposed between the at least partially adjacent pixel units, wherein the via hole is formed in the light shielding layer for making The light emitted by the organic electroluminescent diode and reflected by the surface of the touch body is irradiated onto the plurality of fingerprint recognition units, wherein The touch body surface includes valleys and ridges, and light reflected by the valleys and ridges of the surface of the touch body passes through the via holes and are respectively irradiated onto different fingerprint recognition units.
  • the number of the via holes is plural, and the spacing between any adjacent via holes is equal to 1 to 2 times the image distance, and the image distance is the proximity of the via hole to the fingerprint identification.
  • the fingerprint recognition substrate further includes a microlens disposed on the fingerprint recognition unit.
  • the fingerprint recognition unit is a photosensitive device.
  • the material of the light shielding layer is a metal or a black resin.
  • a gate of the thin film transistor is further formed in the light shielding layer.
  • the via has a pore diameter of from 1 ⁇ m to 100 ⁇ m.
  • the material of the first substrate comprises polyimide.
  • the material of the second substrate comprises polyimide.
  • the touch panel further includes a pair of cassette substrates on a side of the first substrate on which the pixel unit is disposed.
  • Another technical solution adopted by the present invention is a display device including the above touch panel.
  • the present invention has the following advantageous effects.
  • the touch panel of the present invention is provided with a fingerprint identification substrate on a side of the array substrate facing away from the display surface, and a via hole is disposed between at least partially adjacent pixel units of the array substrate, and the via hole satisfies the principle of small hole imaging, thereby
  • the light emitted by the organic electroluminescent diode reflected by the surface of the touch body is irradiated onto the plurality of fingerprint recognition units, and the light reflected by the valleys and the ridges of the surface of the touch body is respectively irradiated onto different fingerprint recognition units, so that The light intensity of the light received by the fingerprint recognition unit is analyzed to identify valleys and ridges that touch the surface of the body.
  • the via hole is provided, the light reflected by the area outside the touch body is blocked by the light shielding layer and cannot pass through the via hole, that is, the light emitted through the via hole is only a small area of the surface of the touch body.
  • the reflected light in this case, the fingerprint information received by the fingerprint recognition unit is more precise, and is beneficial for the recognition of the valleys and ridges of the surface of the touch body.
  • FIG. 1 is a schematic structural view of a touch panel according to a first embodiment of the present invention
  • FIG. 2 is a schematic structural view of a light shielding layer in a touch panel according to a first embodiment of the present invention including a gate;
  • FIG. 3 is a schematic diagram of a plurality of fingerprint recognition units corresponding to one via hole in the touch panel according to the first embodiment of the present invention
  • FIG. 4 is a light intensity distribution diagram after light passes through the via holes in FIG. 3 to reach different fingerprint recognition units;
  • Figure 5 is a light distribution diagram of light rays irradiated to the fingerprint recognition unit at different angles
  • FIG. 6 is a light distribution diagram after light rays of different angles are irradiated to the fingerprint recognition unit of the microlens.
  • the embodiment provides a touch panel with a fingerprint recognition function, which includes an array substrate 1 and a fingerprint identification substrate 2 .
  • the array substrate 1 includes: a first substrate 10; a plurality of pixel units disposed on the first substrate 10, each of which includes a thin film transistor 11 and an organic electroluminescent diode 12.
  • the fingerprint recognition substrate 2 includes: a second substrate 20; and a fingerprint recognition unit 21 on the second substrate 20. The fingerprint recognition substrate 2 is located on a side of the first substrate 10 facing away from the pixel unit.
  • the array substrate 1 in this embodiment further includes: a light shielding layer 13; and a via hole 14 disposed between at least partially adjacent pixel units, the via hole 14 being formed in the light shielding layer 13 for making organic electricity
  • the light emitted by the light-emitting diode 12 reflected by the surface of the touch body is irradiated onto the plurality of fingerprint recognition units 21, wherein the touch body surface includes valleys and ridges, and the light reflected by the valleys and ridges touching the surface of the body passes through the Via 14, They are respectively irradiated onto different fingerprint recognition units 21.
  • the touch body in this embodiment may include a finger, a toe, and any object capable of implementing a touch having a valley and a ridge on its surface.
  • the description is mainly made by taking a touch subject as a finger as an example.
  • the touch panel of the present embodiment is provided with a fingerprint recognition substrate 2 on a side of the organic electroluminescent diode (OLED) array substrate 1 facing away from the display surface, and a via hole is disposed between at least partially adjacent pixel units of the array substrate 1. 14.
  • the via hole 14 satisfies the principle of the aperture imaging, so that the light emitted by the organic electroluminescent diode 12 reflected through the valleys and ridges of the finger surface is irradiated onto the plurality of fingerprint recognition units 21, and reflected through the valleys and ridges of the finger surface.
  • the subsequent light is respectively irradiated onto different fingerprint recognition units 21, in which case the valleys and ridges of the finger surface can be identified by analyzing the light intensity of the light reflected by the valleys and ridges of the finger surface.
  • the via hole 14 since the via hole 14 is provided, the light reflected by the area other than the finger is blocked by the light shielding layer 13 and cannot pass through the via hole 14, that is, the light emitted through the via hole 14 is only a small surface of the finger.
  • the light reflected by the area is more accurate, and the fingerprint information received by the fingerprint recognition unit 21 is more accurate, which is beneficial to the identification of the valleys and ridges on the surface of the finger.
  • the light shielding layer 13 is disposed so as not to affect the aperture ratio of the touch panel.
  • a plurality of via holes 14 are disposed in the light shielding layer 13 of the embodiment, and a spacing between any adjacent ones of the via holes 14 is equal to 1 to 2 times the image distance, wherein the image distance is the via hole 14
  • the fingerprint recognition unit 21 Since the light reflected by the organic electroluminescent diode 12 through the surface of the finger passes through the layer structure of the array substrate 1 and the air layer between the array substrate 1 and the fingerprint recognition substrate 2, the fingerprint recognition unit 21 is reached. The light intensity of the light will be reduced. At the same time, since the incident angle of the light is different, the incident interface of the light is different. When the light intensity is relatively close, the light of different incident angles passes through different incident interfaces. Different reflections and absorptions are generated, so that, as shown in FIGS.
  • the intermediate fingerprint recognition unit 21 (for example, sensor2) corresponding to the via 14 receives the light with the strongest intensity, but with incidence The angle between the light and the normal of the touch panel is increased, and the other fingerprint recognition units 21 receive light of different light intensities (for example, the light intensity of the light received by the sensor1 and the sensor3 is smaller than the light intensity of the light received by the sensor1)
  • the valley and the ridge of the surface of the finger are recognized by analyzing the difference in the light intensity of the light received by the fingerprint recognition unit 21, there may be a problem that the valley is confused.
  • the fingerprint recognition unit 21 in the embodiment selects a photosensitive device (for example, a PIN device), as shown in FIG.
  • the microlens 22 can be disposed on each fingerprint recognition unit 21, in which case, as shown in FIG. 6, the light incident on the microlens 22 at different angles is uniformly irradiated to the fingerprint recognition unit 21
  • the light intensity of the light received by the fingerprint recognition unit 21 is not affected by the incident angle of the light, and the light intensity of the light received by the fingerprint recognition unit 21 is closer to the light emitted by the organic electroluminescent diode and reflected by the surface of the finger.
  • the light passing through the through hole 14 is more uniformly irradiated on the corresponding plurality of fingerprint recognition units 21, which is more advantageous for the identification of the fingerprint valley.
  • the material of the light shielding layer 13 may be metal or black resin, and of course, other light shielding materials may also be used.
  • the light-shielding layer 13 may further include a source and a drain 112 , 113 of the thin film transistor 11 , that is, the via 14 may be disposed in the same layer as the source and drain electrodes 112 , 113 of the thin film transistor 11 , and thus may be adopted.
  • the patterning process forms the vias 14 and the source and drain electrodes 112, 113 of the thin film transistor 11.
  • the light shielding layer 13 may further include a thin film transistor.
  • the gate 111 of 11, that is, the via 14 can be disposed in the same layer as the gate 111 of the thin film transistor 11, so that the via 14 and the gate 111 of the thin film transistor 11 can be formed by one patterning process.
  • a light shielding layer 13 having a via hole 14 may be added between any two film layers of the array substrate 1.
  • the size of the via holes 14 in this embodiment is generally in the range of 1 ⁇ m to 100 ⁇ m, preferably on the order of several ⁇ m, and the spacing between adjacent via holes 14 can be relatively long.
  • the spacing between adjacent via holes 14 can be In the order of several mm, after the fingerprint identification substrate 2 and the array substrate 1 are attached, the light emitted through each of the via holes 14 can be irradiated onto the plurality of fingerprint recognition units 21.
  • the aperture of the via 14 can also be set according to the size of the fingerprint recognition unit 21.
  • the material of the first substrate 10 of the array substrate 1 and the material of the second substrate 20 of the fingerprint identification substrate 2 in this embodiment may both be polyimide (PI).
  • PI polyimide
  • other conventional materials may also be selected.
  • the touch panel of the present embodiment further includes a counter substrate 3 on a side of the first substrate 10 on which the pixel unit is disposed.
  • the embodiment provides a display device including the touch panel in the first embodiment.
  • the fingerprint can be better recognized.
  • the display device in this embodiment may be an electroluminescent display device, such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or the like, having any display function or any product or component.
  • an electroluminescent display device such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or the like, having any display function or any product or component.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Input (AREA)
  • Electroluminescent Light Sources (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention concerne un panneau de commande tactile et un dispositif d'affichage comprenant la commande tactile. Le panneau de commande tactile comprend un substrat de matrice (1) et un substrat de reconnaissance d'empreintes digitales (2). Le substrat de matrice (1) comprend une première base (10) et une pluralité d'unités de pixels agencées sur la première base (10), chacune des unités de pixel comprenant un transistor en couches minces (11) et une diode électroluminescente organique (12). Le substrat de reconnaissance d'empreintes digitales (2) comprenant un second substrat (20) et une unité de reconnaissance d'empreintes digitales (21) disposée sur le second substrat (20). Le substrat de reconnaissance d'empreintes digitales (2) est situé sur un côté du premier substrat opposé aux unités de pixels, le substrat de matrice (1) comprend en outre une couche d'ombrage (13) et des trous d'interconnexion (14) agencés entre au moins une partie d'unités de pixels adjacentes. Les trous d'interconnexion (14) sont formées dans la couche d'ombrage (13), et les trous d'interconnexion sont utilisés pour irradier de la lumière, émise par la diode électroluminescente organique (12) et réfléchie par une surface de corps principal tactile, vers les unités de reconnaissance d'empreintes digitales (21), la surface de corps principal tactile comprenant des rainures et des arêtes, et de la lumière, réfléchie par les rainures et les arêtes de la surface de corps tactile, passant à travers les trous d'interconnexion (14) et étant irradiée respectivement vers différentes unités de reconnaissance d'empreintes digitales (21).
PCT/CN2017/092212 2016-09-30 2017-07-07 Panneau à commande tactile et dispositif d'affichage WO2018059060A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/743,583 US10503947B2 (en) 2016-09-30 2017-07-07 Touch panel and display apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610874200.9 2016-09-30
CN201610874200.9A CN106298859B (zh) 2016-09-30 2016-09-30 触控面板及显示装置

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WO2018059060A1 true WO2018059060A1 (fr) 2018-04-05

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US (1) US10503947B2 (fr)
CN (1) CN106298859B (fr)
WO (1) WO2018059060A1 (fr)

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